TSEOQ News
Official issuer or fund updates, exact SEC current reports, and large established publisher coverage, newest first. Every lawfully retained item remains in the corpus; each public page contains at most 100 rows. Headlines open the exact source; summaries are concise descriptions and not investment recommendations. Captured 2026-08-31.
| Date | Type | Publisher | Headline | Summary |
|---|---|---|---|---|
| 2026-08-14 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 8.01,9.01. |
| 2026-08-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2026-07-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 8.01. |
| 2026-06-12 | Current report | SEC filing | Trinseo PLC filed Form 8-K/A | Trinseo PLC filed Form 8-K/A covering items 9.01. |
| 2026-06-01 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,9.01. |
| 2026-05-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.03,2.04,7.01,9.01. |
| 2026-05-15 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,7.01. |
| 2026-05-14 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,7.01,9.01. |
| 2026-04-30 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2026-04-30 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,7.01,9.01. |
| 2026-04-15 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2026-04-13 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2026-03-20 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2026-03-19 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2026-03-13 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2026-03-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 3.01,9.01. |
| 2026-02-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,7.01,9.01. |
| 2026-01-20 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02. |
| 2026-01-12 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2025-12-15 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 3.01,7.01,8.01,9.01. |
| 2025-12-10 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.05. |
| 2025-11-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2025-10-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.05,7.01,9.01. |
| 2025-10-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2025-08-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2025-08-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2025-06-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.07,9.01. |
| 2025-05-07 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2025-04-04 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2025-03-20 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.02. |
| 2025-02-12 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2025-01-21 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2025-01-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,8.01. |
| 2025-01-16 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,8.01,9.01. |
| 2024-12-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,8.01,9.01. |
| 2024-12-11 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2024-12-10 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,7.01,9.01. |
| 2024-11-19 | Current report | SEC filing | Trinseo PLC filed Form 8-K/A | Trinseo PLC filed Form 8-K/A covering items 2.05. |
| 2024-11-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2024-10-07 | Current report | SEC filing | Trinseo PLC filed Form 8-K/A | Trinseo PLC filed Form 8-K/A covering items 5.02. |
| 2024-09-30 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.05,5.02,9.01. |
| 2024-08-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2024-07-22 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,1.02,2.03,9.01. |
| 2024-06-27 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2024-06-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.07. |
| 2024-05-08 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2024-04-02 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,9.01. |
| 2024-03-13 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2024-02-27 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2024-02-12 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2023-11-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2023-10-30 | Current report | SEC filing | Trinseo PLC filed Form 8-K/A | Trinseo PLC filed Form 8-K/A covering items 2.05,8.01,9.01. |
| 2023-09-22 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2023-09-08 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,8.01,9.01. |
| 2023-08-23 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.05,9.01. |
| 2023-08-16 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2023-08-10 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01. |
| 2023-08-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2023-07-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2023-07-20 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2023-06-16 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.07,9.01. |
| 2023-05-05 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01. |
| 2023-05-04 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2023-04-18 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2023-02-08 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2023-01-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-12-19 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.05,8.01,9.01. |
| 2022-11-02 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-10-18 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-08-08 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-06-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.07,9.01. |
| 2022-05-04 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-02-25 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2022-02-23 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2022-02-08 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2022-01-24 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2021-12-02 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.01,8.01,9.01. |
| 2021-12-02 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 8.01,9.01. |
| 2021-11-05 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2021-10-27 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.02,9.01. |
| 2021-08-04 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2021-07-21 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2021-07-19 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2021-07-13 | Current report | SEC filing | Trinseo PLC filed Form 8-K/A | Trinseo PLC filed Form 8-K/A covering items 2.01,9.01. |
| 2021-06-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 5.07,9.01. |
| 2021-05-25 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,8.01,9.01. |
| 2021-05-14 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2021-05-06 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2021-05-05 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,9.01. |
| 2021-05-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.01,8.01,9.01. |
| 2021-03-26 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 8.01. |
| 2021-03-24 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,2.03,9.01. |
| 2021-03-22 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,9.01. |
| 2021-03-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 8.01. |
| 2021-03-15 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2021-03-10 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2021-02-03 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |
| 2020-12-17 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 1.01,8.01,9.01. |
| 2020-12-14 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 7.01,9.01. |
| 2020-11-05 | Current report | SEC filing | Trinseo PLC filed Form 8-K | Trinseo PLC filed Form 8-K covering items 2.02,9.01. |